Physics

Problem

6\,\text{kg}

gun fires a

30\,\text{g}

bullet with a speed of

400\,\text{m s}^{-1}

relative to the ground. Neglect external forces. What is the magnitude of the recoil speed of the gun? a)

0.5\,\text{m s}^{-1}

2\,\text{m s}^{-1}

0.2\,\text{m s}^{-1}

12\,\text{m s}^{-1}